Valve pushing device

Abstract

The utility model discloses a valve pushing device which comprises a tailstock, a pushing air cylinder and a pressing mechanism, the pushing air cylinder is installed on the tailstock, the pressing mechanism is connected in an inner cavity of the tailstock in a sliding mode, a connecting sleeve is arranged at the front end of the pressing mechanism, an installation cavity is formed in the connecting sleeve, a pushing head is arranged in the installation cavity, and the pushing head is connected with the pushing air cylinder. The bottoms of the left side wall and the right side wall of the installation cavity are hinged to the installation cavity, the bottoms and the tops of the left side wall and the right side wall are provided with a pressing plate and a clamping plate respectively, the pressing plate and the clamping plate are both perpendicular to the left side wall or the right side wall, and a clamping opening is formed in the side wall of the push head and matched with the clamping plate. The upper end face of the crimping plate is connected with the lower end face of the push head.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve pushing device. BACKGROUND

[0002] As a key component of the engine, the main responsibility of the valve is to introduce fresh air into the engine and to exhaust the exhaust gas after combustion. The valve is usually composed of a valve head and a stem, and the shape of the valve head is various, including flat top, spherical top and horn top, etc. The flat top valve is widely used due to its simple structure, convenient manufacturing, small heat absorption area, light weight and general applicability to intake and exhaust valves.

[0003] In the production process of the mechanical and electrical valve department, the machining of the flat top valve head depends on advanced numerical control lathes. However, the valve numerical control lathe currently used does not have the function of automatic feeding and discharging, and still needs manual feeding operation by employees. In view of this problem, the pressure on the valve is completed by the mechanism of the cylinder and the push rod. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving the above technical problems, and provides a valve pushing device.

[0005] A valve pushing device, comprising a tailstock, a pushing cylinder and a pressing mechanism, the pushing cylinder is installed on the tailstock, the pressing mechanism is slidingly connected in the inner cavity of the tailstock, the front end of the pressing mechanism is provided with a connecting sleeve, the connecting sleeve is provided with a mounting cavity, a push head is arranged in the mounting cavity, the bottom of the left and right side walls of the mounting cavity is hinged to the mounting cavity, the bottom and top of the left and right side walls are respectively provided with a pressing plate and a clamping plate, the pressing plate and the clamping plate are perpendicular to the left or right side wall, the side wall of the push head is provided with a clamping port, the clamping port is matched with the clamping plate, and the upper end surface of the pressing plate is connected with the lower end surface of the push head.

[0006] Further, the pressing mechanism comprises a sleeve, a connecting sleeve, a Morse rotary center and a push head, the sleeve is movably connected in the tailstock, the end of the Morse rotary center away from the sleeve is provided with a containing cavity, the connecting sleeve is fixedly arranged in the containing cavity through a bearing, the connecting sleeve is provided with a mounting cavity, one end of the push head is fixedly arranged in the mounting cavity in an interference manner, and the sleeve is driven to slide in the tailstock by the pushing cylinder.

[0007] Further, the end of the containing cavity is provided with a dust cover, and the connecting sleeve penetrates through the dust cover.

[0008] Further, the material of the push head is selected from rubber.

[0009] Further, the tailstock of the lathe is fixedly provided with a cylinder fixing plate, the pushing cylinder is fixedly arranged on the cylinder fixing plate, one end of the sleeve away from the Morse rotary center is fixedly provided with a connecting plate, and the piston rod of the pushing cylinder is fixedly connected with the connecting plate through screw threads.

[0010] Further, the piston rod is threadedly connected with a locking nut for locking the connecting plate.

[0011] Beneficial effects: compared with the prior art, the utility model has the following advantages:

[0012] The device realizes effective pushing operation of the valve through the combination of the tailstock, the pushing cylinder and the pressing mechanism. The connection and cooperation between the various components are reasonably designed, so that the whole device is compact in structure and can meet the pushing requirements in the valve machining process.

[0013] The pressing mechanism adopts the combination design of the sleeve, the connecting sleeve, the Morse rotary center and the pushing head, so that the pressing operation is more flexible. In particular, the pushing head is matched with the clamping plate through the clamping interface, and the pressing plate is connected with the lower end surface of the pushing head, so as to ensure the stability and reliability of the pushing head in the installation cavity.

[0014] The dust cover is arranged at the end of the accommodating cavity, which can effectively prevent dust and impurities from entering the connecting sleeve and the installation cavity, thereby prolonging the service life of the device and reducing the maintenance cost.

[0015] The pushing head is made of rubber material, which has good elasticity and wear resistance, can adapt to valves of different shapes and sizes, and reduces damage to the valve during pushing.

[0016] The tailstock of the lathe is fixedly provided with a cylinder fixing plate, the pushing cylinder is fixedly arranged on the cylinder fixing plate, one end of the sleeve away from the Morse rotary center is fixedly provided with a connecting plate, and the piston rod of the pushing cylinder is fixedly connected with the connecting plate through screw threads. This design makes the installation and disassembly of the whole device more convenient. At the same time, the locking nut threadedly connected with the piston rod can ensure the stability and reliability of the connecting plate, and further improve the safety and service life of the device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a partial sectional view schematic diagram of the valve pushing device of the utility model;

[0018] Figure 2 is a partial sectional view schematic diagram of the lathe clamp of the embodiment;

[0019] Figure 3 is a cooperation schematic diagram of the valve pushing device and the lathe clamp of the utility model;

[0020] Figure 4 is a front view schematic diagram of the valve of the embodiment;

[0021] Figure 5is the assembly schematic view of the connecting sleeve and the push head;

[0022] Figure 6 is the schematic view of the connecting sleeve;

[0023] Figure 7 is the schematic view of the push head;

[0024] In the figure, 1, lathe tailstock, 2, pushing cylinder, 3, Morse rotary center, 3-1, containing cavity, 4, push head, 5, sleeve, 6, connecting sleeve, 6-1, clamping plate, 6-2, crimping plate, 7, bearing, 7-1, ball bearing, 7-2, roller bearing, 8, dust cover, 9, cylinder fixing plate, 10, connecting plate, 11, locking nut; 12, air valve, 12-1, air valve head, 12-11, head end face, 12-12, taper surface, 12-13 neck arc surface; 13, lathe main shaft, 14, clamping body, 15, positioning end cover, 15-1, positioning through hole, 16, flange plate, 17, spring chuck, 18, chuck pull rod, 19, positioning rod, 20, positioning sleeve. DETAILED DESCRIPTION

[0025] In order to deepen the understanding of the utility model, the utility model will be further described below in combination with examples and drawings, and the examples are only used to explain the utility model and do not constitute a limitation on the protection scope of the utility model.

[0026] An air valve pushing device, comprising a lathe tailstock 1, a pushing cylinder 2, a Morse rotary center 3, a push head 4 and a connecting sleeve 6, the sleeve 5 is slidably arranged in the lathe tailstock 1, one end of the Morse rotary center 3 with Morse taper is fixedly connected with the sleeve 5, the end of the Morse rotary center 3 away from the sleeve 5 is fixedly connected with the push head 4 through the connecting sleeve 6, specifically, the end of the Morse rotary center 3 away from the sleeve 5 is provided with a containing cavity 3-1, the connecting sleeve 6 is fixedly arranged in the containing cavity 3-1 through the bearing 7, the number of the bearing 7 is two, the two bearings 7 are sequentially distributed along the connecting sleeve 6, and the bearing 7 close to the push head 4 selects a ball bearing 7-1, and the bearing 7 away from the push head 4 selects a roller bearing 7-2, the connecting sleeve 6 is provided with a mounting cavity, the bottom of the left side wall and the right side wall of the mounting cavity is hinged with the mounting cavity, the bottom and the top of the left side wall and the right side wall are respectively provided with a crimping plate and a clamping plate, the crimping plate and the clamping plate are perpendicular to the left side wall or the right side wall, the push head side wall is provided with a clamping port, the clamping port is matched with the clamping plate, and the upper end face of the crimping plate is connected with the lower end face of the push head.

[0027] Specifically, when the push head is clamped, the left and right side walls are opened outward, and then the push head is inserted, and in the process, the lower end surface of the push head contacts the pressing plate to exert pressure on the pressing plate, so that the left and right side walls rotate inward, and the clamping plate is clamped into the clamping port on the side wall of the push head, thereby completing the fixation of the push head.

[0028] One end of the push head 4 is fixed in the installation cavity with interference; in order to prevent the push head 4 from scratching the end surface of the valve head 12-1 when the push head 4 contacts the end surface of the valve head 12-1, the material of the push head 4 is selected to be oil-resistant rubber; in order to prevent machining waste from entering the containing cavity 3-1, a dust cover 8 is arranged at the end of the containing cavity 3-1, and the connecting sleeve 6 penetrates the dust cover.

[0029] The sleeve 5 is driven by the pushing cylinder 2 to slide in the lathe tailstock 1; specifically, the cylinder fixing plate 9 is fixedly arranged on the lathe tailstock 1 through threads, the pushing cylinder 2 is fixedly arranged on the cylinder fixing plate 9, the connecting plate 10 is fixedly arranged at one end of the sleeve 5 away from the Morse rotary center 3 through threads, and the piston rod of the pushing cylinder 2 is fixedly connected with the connecting plate 10 through threads; in order to make the fixed connection of the piston rod and the connecting plate 10 more reliable and not easy to be separated, the locking nut 11 for locking the connecting plate 10 is threadedly connected on the piston rod.

[0030] As shown in Figures 2 to 4 The valve 12 to be turned is a valve head 12-1, the surface of the valve head 12-1 to be turned includes a head end surface 12-11, a tapered surface 12-12 and a neck arc surface 12-13, and the tapered surface 12-12 is located between the head end surface 12-11 and the neck arc surface 12-13. The machining device used is a valve numerical control lathe produced by Jinan Baima Yongcheng Machinery Manufacturing Co., Ltd., and the model is YC6136-B. The valve 12 clamp of the numerical control lathe includes a clamp body 14 and a positioning end cover 15. The clamp body 14 is fixedly connected with the lathe main shaft 13 through a flange plate 16. A spring chuck 17 is arranged in the clamp body 14. The spring chuck 17 is fixedly connected with the lathe main shaft 13 through a chuck pull rod 18. A positioning rod 19 is fixedly arranged at one end of the spring chuck 17 close to the lathe main shaft 13. A positioning sleeve 20 is fixedly arranged at one end of the clamp body 14 away from the lathe main shaft 13. The positioning end cover 15 is sleeved on the positioning sleeve 20 and is fixedly connected with the positioning sleeve 20. The positioning end cover 15 is provided with a positioning through hole 15-1 matched with the neck of the valve 12. The direction of the spring chuck 17, the axis of the positioning through hole 15-1 and the movement direction of the push head 4 coincide.

[0031] The working principle is as follows:

[0032] First, the stem of the valve 12 is pre-inserted into the spring chuck 17 through the positioning hole 15-1, then the pushing cylinder 2 is started, the piston rod of the pushing cylinder 2 is extended, in turn drives the sleeve 5, the Morse rotary center 3, the connecting sleeve 6 and the push head 4 to move towards the head end surface 12-11 of the valve 12, the push head 4 contacts the head end surface 12-11 and pushes the valve 12 to move towards the positioning rod 19, when the stem end surface of the valve 12 contacts the positioning rod 19, the valve 12 is inserted in place, the pushing cylinder 2 is paused, at this time, the neck of the valve 12 cooperates with the positioning hole 15-1, the head end surface 12-11, the taper surface 12-12 and the neck arc surface 12-13 to be turned are located outside the positioning end cover 15, the spring chuck 17 clamps and positions the valve 12 again, the pushing cylinder 2 drives the push head 4 to reset again, and the turning clamping of the valve 12 is completed.

[0033] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A valve lifter apparatus, characterized by, The utility model relates to a lathe tailstock, push material air cylinder, compression mechanism, the push material air cylinder is installed on the lathe tailstock, the compression mechanism is slidably connected in the inner chamber of lathe tailstock, the compression mechanism front end is equipped with the connecting sleeve, the connecting sleeve is equipped with the installation cavity, is equipped with the push head in the installation cavity, the left side wall bottom of installation cavity is hinged with installation cavity, the right side wall bottom of installation cavity is hinged with installation cavity, the bottom and top of left side wall are equipped with the compression plate board and the clamping plate respectively, the bottom and top of right side wall are equipped with the compression plate and the clamping plate respectively, and the compression plate board and the clamping plate are perpendicular with left side wall or right side wall, the push head side wall is equipped with the clamping interface, and the clamping interface is cooperated with the clamping plate, and the compression plate upper end surface is connected with the push head lower end surface, the compression mechanism includes sleeve, connecting sleeve, morse rotary centre and push head, the sleeve is movably connected in the lathe tailstock, the morse rotary centre is equipped with the containing cavity in the end away from the sleeve, the connecting sleeve is fixedly arranged in the containing cavity through the bearing, the connecting sleeve is equipped with the installation cavity, one end of the push head is fixedly arranged in the installation cavity with interference, and the sleeve is driven to slide in the lathe tailstock by the push material air cylinder.

2. The valve unscrambler of claim 1, wherein, The end of the containing cavity is provided with a dust cover, and the connecting sleeve passes through the dust cover.

3. The valve unscrambler of claim 1, wherein, The push head is made of rubber.

4. The valve unscrambler of claim 1, wherein, The lathe tailstock is fixedly provided with a cylinder fixing plate, the push material air cylinder is fixedly arranged on the cylinder fixing plate, the end away from the morse rotary centre of the sleeve is fixedly provided with a connecting plate, and the piston rod of the push material air cylinder is fixedly connected with the connecting plate through screw threads.

5. The valve unscrambler of claim 4, wherein, The piston rod is threadedly connected with a locking nut for locking the connecting plate.

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